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 /*

  * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.

  * Copyright 2012, 2018 SAP AG. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 #ifndef CPU_PPC_VM_VM_VERSION_PPC_HPP

 #define CPU_PPC_VM_VM_VERSION_PPC_HPP

 #include "runtime/globals_extension.hpp"

 #include "runtime/vm_version.hpp"

 class VM_Version: public Abstract_VM_Version {

 protected:

   enum Feature_Flag {

     fsqrt,

     fsqrts,

     isel,

     lxarxeh,

     cmpb,

     popcntb,

     popcntw,

     fcfids,

     vand,

     dcba,

     lqarx,

     vcipher,

     vpmsumb,

     mfdscr,

     vsx,

     vshasig,

     num_features // last entry to count features

   };

   enum Feature_Flag_Set {

     unknown_m             = 0,

     fsqrt_m               = (1 << fsqrt  ),

     fsqrts_m              = (1 << fsqrts ),

     isel_m                = (1 << isel   ),

     lxarxeh_m             = (1 << lxarxeh),

     cmpb_m                = (1 << cmpb   ),

     popcntb_m             = (1 << popcntb),

     popcntw_m             = (1 << popcntw),

     fcfids_m              = (1 << fcfids ),

     vand_m                = (1 << vand   ),

     dcba_m                = (1 << dcba   ),

     lqarx_m               = (1 << lqarx  ),

     vcipher_m             = (1 << vcipher),

     vshasig_m             = (1 << vshasig),

     vpmsumb_m             = (1 << vpmsumb),

     mfdscr_m              = (1 << mfdscr ),

     vsx_m                 = (1 << vsx    ),

     all_features_m        = -1

   };

   static int  _features;

   static int  _measured_cache_line_size;

   static const char* _features_str;

   static bool _is_determine_features_test_running;

   static void print_features();

   static void determine_features(); // also measures cache line size

   static void config_dscr(); // Power 8: Configure Data Stream Control Register.

   static void determine_section_size();

   static void power6_micro_bench();

 public:

   // Initialization

   static void initialize();

   static bool is_determine_features_test_running() { return _is_determine_features_test_running; }

   // CPU instruction support

   static bool has_fsqrt()   { return (_features & fsqrt_m) != 0; }

   static bool has_fsqrts()  { return (_features & fsqrts_m) != 0; }

   static bool has_isel()    { return (_features & isel_m) != 0; }

   static bool has_lxarxeh() { return (_features & lxarxeh_m) !=0; }

   static bool has_cmpb()    { return (_features & cmpb_m) != 0; }

   static bool has_popcntb() { return (_features & popcntb_m) != 0; }

   static bool has_popcntw() { return (_features & popcntw_m) != 0; }

   static bool has_fcfids()  { return (_features & fcfids_m) != 0; }

   static bool has_vand()    { return (_features & vand_m) != 0; }

   static bool has_dcba()    { return (_features & dcba_m) != 0; }

   static bool has_lqarx()   { return (_features & lqarx_m) != 0; }

   static bool has_vcipher() { return (_features & vcipher_m) != 0; }

   static bool has_vpmsumb() { return (_features & vpmsumb_m) != 0; }

   static bool has_mfdscr()  { return (_features & mfdscr_m) != 0; }

   static bool has_vsx()     { return (_features & vsx_m) != 0; }

   static bool has_vshasig() { return (_features & vshasig_m) != 0; }

   static const char* cpu_features() { return _features_str; }

   static int get_cache_line_size()  { return _measured_cache_line_size; }

   // Assembler testing

   static void allow_all();

   static void revert();

   // POWER 8: DSCR current value.

   static uint64_t _dscr_val;

 };

 #endif // CPU_PPC_VM_VM_VERSION_PPC_HPP